This study compared the effects of carbamide peroxide (CP) and chlorhexidine (CHX) on oral biofilm in vitro. Collagen-coated hydroxyapatite discs were inoculated with subgingival plaque. After 3 weeks, the emergent biofilms were subjected to 1-, 3-, and 10-min exposures of a 1% CHX gel, a 5% CP gel and rinse, and a 10% CP gel and rinse. Subsequently, the biofilms were stained using a two-colour...

Objective: To evaluate the in vitro effect of antioxidants on bond strength between composite resin and enamel subjected to bleaching agents. Methods: Nineteen sound human molars had their roots sectioned, while surfaces were flattened filled with produce specimens, which then divided into seven groups: G1 – unbleached without antioxidant (control); G2 36% carbamide peroxide; G3 peroxide 10% as...

Tooth bleaching is a common treatment for the amelioration of aesthetic discoloured teeth. In this context, there are two approaches that employ concentrated solutions (30–40 wt.%) either hydrogen peroxide or carbamide as agents. However, an ongoing debate on possible adverse effects these different treatments tooth health, such variation enamel structure, surface morphology, and chemistry, whi...

After reading this article, the reader should be able to: • describe the process of nightguard vital bleaching and discuss indications and contraindications. • list the situations amenable to at-home whitening, including extended bleaching times for tetracyclinestained teeth. • explain how to treat side effects, such as tooth sensitivity during whitening. • discuss treatment options for a singl...

Changes in the color of teeth to become darker are a lot complaints by public. Bleaching is whitening treatment for that have changed color. Home bleaching can be done at home under supervision dentist using 10% carbamide peroxide period more than 2 weeks. The purpose this study was determine effectiveness as agent with an extended time against tooth discoloration. This type research Literature...

OBJECTIVES There is concern that hydrogen peroxide generated by tooth bleaching agents may cause enhanced metal ion release (including mercury) from dental amalgam following contact. The aim of this in vitro study was therefore to investigate the effect of a carbamide peroxide (CP) based tooth bleaching gel on metal ion release from dental amalgam. METHODS Dental amalgam discs were prepared a...

The aim of this study was to evaluate the effect of bleaching and thermocycling on microshear bond strength of bonded resin composites to enamel. Enamel slices were prepared from ninety-six intact human premolars and resin composite cylinders were bonded by using Adper Single Bond 2 + Filtek Z350 or Filtek silorane adhesive and resin composite. Each essential group was randomly subdivided to tw...

The wide use of dental bleaching treatment has brought concern about the possible effects of hydrogen peroxide on dental tissue and restorative materials. The objective of this study was to evaluate in vitro the effect of nightguard bleaching on the surface roughness of dental ceramics after different periods of bleaching treatment. Fifteen specimens of 5 × 3 × 1 mm were created with three dent...

Absract : The discoloration of teeth on front part form fundamental aesthetic problemes. In order to treat this kinds of teeth, different methods have been used. Yet the most conservatif one is intracoronal bleaching technique. Various agents such as sodium perborate, hydrogen peroxide, carbamide peroxide and sodium perborate have been used as bleaching agent. 30% of hydrogen peroxide has been ...